Precision collets reduce stone run-out and increase safetyPatented “silencing technology” reduces the noise level to 79 dBaThe composite grip and throttle trigger have been ergonomically designed to provide unmatched comfort for the userRear exhaust 20,000 RPM Terms of Sale: All of our items are shipped with tracking numbers. Orders will be shipped within 3 working days upon receipt of payment. In most cases, shipping takes 8-12 working days. All items are Brand New unless otherwise noted. We will take any items back within 15 days of purchase as long as the item is returned the same way it was shipped, with all the packing materials. Any problems after 15 days must be handled directly thru the manufacturer. We can supply you with a receipt and help in any way possible but we can not take back products after the 15 days. In an effort to keep our prices as low as possible we can not pay for any shipping cost on returns. If an item is received D.O.A. or encounters a problem within the first 15 days we will gladly exchange and ship out the return item at no additional cost to you but the shipping cost on the item being returned must be by the customer. If you encounter any defects or damages, simply contact us with details and photos, and we'll arrange a return or replacement. All colors on our website are for reference only, actual product colors may vary a little bit, due to different color settings of every screen device. Please note: most of our items are hand-measured, therefore the dimensions are for reference only, and may marginally deviate. We reserve the right to refuse any returns for objective reasons. We can not make any exceptions.